Magnetic Circular Dichroism Spectroscopy

In this paper, the design of magnetic circular dichroism spectroscopy has been introduced. CD (circular dichroism) spectroscopy is based upon the measurement of the difference in absorption between left circularly polarized (Icp) light and right circularly polarized (rcp) light.The difference absorption, or dichroism, is defined by convention as AA=AL-AR. The measured AA is the same quantity measured for natural circular dichroism (CD) which is observed for chiral (optically active) molecules in regions of absorption. However, the origin of CD and MCD is quite different.Natural CD requires a molecular environment where molecular structure features distribute electric charge in a spatial array that has helical "handedness." In contrast, MCD is due to electromagnetic interaction of the external field with electronic charge within the sample, no matter how it is distributed, and is a universal property of light absorption for all matter when placed in a magnetic field.This paper is divided into four parts:Chapter I: Theory Of magnetic circular dichroism.Chapter II: Measurement principle of Magnetic circular dichroism spectra.Chapter III: our own magnetic circular dichroism spectra measurement systemChapter IV: Measurement data.